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资源说明：Delayed Job vs Resque Shootout
== Background Benchmarks
I wanted to see the performance of Delayed Job w/ Postgres ActiveRecord backend vs Resque backed with Redis.
There are three branches in the project.
== To test Delayed Job:
$ git checkout delayed-job
$ rake jobs:work
$ rails c
$ >> TestRunner.run(DJ, 10000)
== To test Resque:
$ git checkout resque
$ QUEUE=* rake environment resque:work
$ rails c
$ >> TestRunner.run(RQ, 10000)
== To test Resque with the Resque Jobs Per Fork plugin:
$ git checkout resque-jobs-per-fork
$ QUEUE=* JOBS_PER_FORK=5 rake environment resque:work
$ rails c
$ >> TestRunner.run(RQ, 10000)
== Read Your Results
Look at your logs, and find the "Starting" entry
There will be a corresponding "Stopping" entry at the end
Take the difference of the two timestamps, and divide 10000 / (stopping - starting)
And you will have the jobs/s rate of whatever backend you are using.
== My Results
In my tests,
- Delayed Job processed: 169 jobs/s
- Resque processed: 113 jobs/s.
- Resque w/ resque-jobs-per-fork plugin @ 5 jobs per fork: 290 jobs/s
- Resque w/ resque-jobs-per-fork plugin @ 100 jobs per fork: 609 jobs/s
== Todo:
- Test multiple workers on each backend.
- Test reading/writing to the database during the test
- Test reading/writing to Redis during the test
- Analyze memory usage
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